WELCHES, OR · Clackamas County

ZIG ZAG WATER CO-OP Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Oregon’s official records. Always confirm current status with Oregon before making decisions based on this information.

System facts

System ID (PWSID): OR4101241
System type: Community Water System
Population served: 60
Service connections: 46
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 1, 2023 – October 18, 2023
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2022 – September 30, 2023
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2022 – September 30, 2023
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2021 – December 31, 2021
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
September 26, 2014 – September 10, 2014
Resolved
Monitoring, Source Water (GWR)
—
E. COLI
July 31, 2014 – August 13, 2014
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
July 1, 2014 – July 31, 2014
Resolved
Monitoring, Regular
—
Combined Uranium
April 1, 2014 – June 30, 2014
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2014 – March 31, 2014
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
January 1, 2014 – December 31, 2019
Resolved
Monitoring, Regular
—
Combined Uranium
July 1, 2013 – September 30, 2013
Resolved
Monitoring, Regular
—
Combined Uranium
January 1, 2013 – March 31, 2013
Resolved
Failure to Conduct Assessment Monitoring
—
COLIPHAGE
January 1, 2013 – December 31, 2013
Resolved
Monitoring, Regular
—
Combined Uranium
October 1, 2012 – December 31, 2012
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2011 – December 31, 2011
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2009 – January 31, 2009
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2009 – January 31, 2009
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2003 – June 30, 2003
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
October 19, 2002 – March 13, 2003
Resolved
Monitoring, Regular
—
Nitrate
January 1, 2002 – December 31, 2002
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 2000 – September 30, 2000
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 1998 – September 30, 1998
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
January 1, 1998 – January 31, 1998
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
April 1, 1997 – April 30, 1997
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1997 – December 31, 1997
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Toxaphene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Toluene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Endrin
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Xylenes, Total
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
BHC-GAMMA
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Chlordane
January 1, 1996 – December 31, 1998
Resolved
Initial, Follow-up, or Routine Source Water M/R
—
Lead and Copper Rule
October 1, 1994 – December 27, 2004
Resolved
Public Education
Health-based
Lead and Copper Rule
June 1, 1994 – December 27, 2004
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
September 1, 1993 – September 30, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
July 1, 1993 – July 31, 1993
Resolved
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
November 1, 1992 – November 30, 1992
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
November 1, 1992 – November 30, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1992 – November 30, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
November 1, 1992 – November 30, 1992
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1992 – October 31, 1992
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1992 – October 31, 1992
Resolved
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
August 1, 1992 – August 31, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1992 – April 30, 1992
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1991 – October 31, 1991
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1991 – October 31, 1991
Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2023 – October 18, 2023	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
October 1, 2022 – September 30, 2023	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2022 – September 30, 2023	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2021 – December 31, 2021	Monitoring, Regular	Nitrate	—	Resolved
September 26, 2014 – September 10, 2014	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
July 31, 2014 – August 13, 2014	Monitoring, Source Water (GWR)	E. COLI	—	Resolved
July 1, 2014 – July 31, 2014	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
April 1, 2014 – June 30, 2014	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2014 – March 31, 2014	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2014 – December 31, 2019	Monitoring, Regular	Combined Radium (-226 and -228)	—	Resolved
July 1, 2013 – September 30, 2013	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2013 – December 31, 2013	Failure to Conduct Assessment Monitoring	COLIPHAGE	—	Resolved
October 1, 2012 – December 31, 2012	Monitoring, Regular	Combined Uranium	—	Resolved
January 1, 2011 – December 31, 2011	Monitoring, Regular	Nitrate	—	Resolved
January 1, 2009 – January 31, 2009	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2009 – January 31, 2009	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
June 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 19, 2002 – March 13, 2003	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2002 – December 31, 2002	Monitoring, Regular	Nitrate	—	Resolved
September 1, 2000 – September 30, 2000	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
September 1, 1998 – September 30, 1998	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
January 1, 1998 – January 31, 1998	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1997 – April 30, 1997	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
January 1, 1997 – December 31, 1997	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Toxaphene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Toluene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Endrin	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Xylenes, Total	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	BHC-GAMMA	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Chlordane	—	Resolved
October 1, 1994 – December 27, 2004	Initial, Follow-up, or Routine Source Water M/R	Lead and Copper Rule	—	Resolved
June 1, 1994 – December 27, 2004	Public Education	Lead and Copper Rule	Health-based	Resolved
September 1, 1993 – September 30, 1993	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 1993 – July 31, 1993	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
November 1, 1992 – November 30, 1992	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
November 1, 1992 – November 30, 1992	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
November 1, 1992 – November 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
November 1, 1992 – November 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1992 – October 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1992 – October 31, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1992 – August 31, 1992	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Resolved
April 1, 1992 – April 30, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
October 1, 1991 – October 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1991 – October 31, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

October 18, 2023State Compliance achieved2 linked violations
October 10, 2014State Compliance achieved3 linked violations
September 10, 2014State Compliance achieved4 linked violations
January 2, 2014State Compliance achieved16 linked violations
February 4, 2013State Violation/Reminder Notice10 linked violations
October 29, 2012State Violation/Reminder Notice10 linked violations
June 30, 2003State Public Notification received6 linked violations
August 14, 2001State Compliance achieved21 linked violations
May 6, 1998State Administrative/Compliance Order with penalty issued1 linked violation
January 1, 1998State Compliance achieved2 linked violations
March 31, 1997State Public Notification received35 linked violations

Contact

ZIG ZAG WATER CO-OP

503-310-9262

WELCHES, OR 97067